Defensive publication

ABSTRACT

A CELLULOSE ESTER COATING COMPOSITION SUITABLE FOR COATING SUBSTRATES SUCH AS PAPER WHICH CONTAIN PRINTED LINEIFORM IMAGES IS EMBOSSED WITH A LENS-LIKE SURFACE PATTERN TO PRODUCE A PICTORIAL PARALLAX PANORAMAGRAM. THE COMPOSITION CONTAINS BETWEEN ABOUT 65-85% BY WEIGHT OF CELLULOSE ACETATE BUTYRATE, HAVING A BUTYRYL CONTENT GREATER THAN 38% BY WEIGHT TOGETHER WITH ABOUT 15-35% BY WEIGHT OF A PLASTICIZER HAVING A BOILING POINT OF AT LEAST 325*C. AS A HOT MELT AT 375*F., THE COMPOSITION HAS A VISCOSITY OF BETWEEN ABOUT 2,000 AND 50,000 CENTIPOISES AND A MELT STABILITY OF BETWEEN ABOUT 1.0 AND 1.6 HOURS.

DEFENSIVE PUBLICATION UNITED STATES PATENT OFFICE Published at the request of the applicant or owner in accordance with the Notice of Dec. 16,1969, 869 O.G. 687. The abstracts of Defensive Publication applications are identified by distinctly numbered series and are arranged chronologically. The bending of each abstract indicates the number of pages of specification, including claims and sheets of drawings contained in the application as originally filed. The files of these applications are available to the public-for inspection and reproduction may be purchased for 30 cents a sheet.

Defensive Publication applications have notEbeen examined as to the merits of alleged invention. The Patent Oflice makes no assertion as to the novelty of the disclosed subject matter.

PUBLISHED MARCH 14, 1972 T896,031 PICTORIAL PARALLAX PANORAMAGRAM IN- CLUDING A CELLULOSE ESTER HOT MELT THERMOPLASTIC VIEWING SCREEN Harris N. Stephens, Jr., P.0. Box 511, Kingsport, Tenn. 37662 Continuation of'application Sel'. No. 846,621, July 31,

1969, which is a continuation-in-part of application Ser.

No. 758,114, Sept. 6, 1968. This application Mar. 12,

1971, Ser. No. 123,875

Int. Cl. B44c 1/20; D2111 1/42; G02b 27/22 US. Cl. 117-10 No Drawing. 11 Pages Specification A cellulose ester coating composition suitable for coating substrates such as paper which contain printed lineiform images is embossed with a lens-like surface pattern to produce a pictorial parallax panoramagram. The composition contains between about 65-85% by weight of cellulose acetate butyrate, having a butyryl content greater than 38% by weight together with about 15-35% by weight of a plasticizer having a boiling point of at least 325 C. As a hot melt at 375 F., the composition has a viscosity of between about 2,000 and 50,000 centipoises and a melt stability of between about 1.0 and 1.6 hours. 

